Question

A gun fired from the moon cannot be heard at all because-​

Answer 1

• Sound waves need a medium to propagate. In between earth and moon there is no medium for sound propagation. So if a cannon being fired on the surface of the moon, then the sound will not be heard at the surface of the earth. The atmosphere of moon is negligible for practical purposes.

Answer 2

Answer:

The sound of the gun cannot be heard at all because there is no air in the moon and sound cannot travel through vacuum.

Explanation:

Hope it helps.